Self-closing gas-burner.



No. 693,352. Patented Feb. I902.

w. a GLOU.

SELF CLOSING GAS BURNER.

(Application filed Sept. 12, 1900.)

(No Model.)

F/G6. FIG? F MWIW l6 WITNESSES. Z INVENTORY 15m V/QL/QZ W 414, 0. av/Mr/ W THE NORRJS PETERS co., mom-Luna" WASNINGTUN, 11c.

UNITED STATES PATENT ()EEICE.

WOLF GLOU AND ISIDOR GLOU, OF SCRANTON, PENNSYLVANIA.

SELF-CLOSING GAS-BURNER.

. SPECIFICATION forming part of Letters Patent No. 693,352, datedFebruary 1 1, 1902.

Application filed September 12,1900. Serial No. 29,855. (No model.) i

To all whom it may concern:

Be it known that we, WOLF GLOU and ISI- DOR GLOU, citizens of the UnitedStates, residing at Scranton, in the county of Lackawanna and State ofPennsylvania, have invented certain newand useful Improvements inSelf-Closing Gas-Burners, of which the following is a specification,reference being had therein to the accompanying drawings.

Our invention relates to that class of automatic opening and closingdevices for gasburners in which a strip of two metals of varyingexpansibility is used to form a thermostat adapted to be operated by theheat of the flame, and hence to open the fiow of gas when it becomesheated and close it when the flame is extinguished.

The objects of the invention-are to afiord a simpler and more reliabledevice of the kind, toequip an ordinary gas-jet tube with such device,and to improve the efliciency in genera-l.

To these ends the device consists in the construction, arrangement, andcombination of the several parts illustrated in the drawings, in whichFigure 1 shows a side elevation of a common jet-tube fitted with ourdevice. Fig. 2 is a similar view taken at right angles to that of Fig.1-. Fig. 3 is a cross-section taken on the line a; a; of Fig. 1. Fig. 4is a topplan view of a jet tube fitted with the device. Fig. 5 is adetail view of the upper ring used in attaching the device. Fig. 6 is adetail View of the lower ring used in attaching the device. Fig. 7 is anunder side View of the valve used in the device. Fig. 8 is a generalview illustrating the operation of the device.

Similar figures of reference denote like and corresponding partsthroughout the several views.

. constructed therein.

fitted into oneside of the jet-tube. The innor end of this pin engageswith a valve-stem 12, which has a flattened portion against which thepinis designed to impinge. This valve-stem is connected with a valve-lid13, which is hinged to a perforated diaphragm 14, secured in the lowerpart of the tube, the hinge being made by simply bending over the edgeof the metal from which the valvelid is constructed and hooking it intoa narrow slot hacked into the under side of the diaphragm, simplysufiicient to keep it from shifting about. The valve-lid is designed tocover the aperture or opening through the diaphragm which serves as apassage-way for the gas passing upward. The valve is kept closed by theaction of an elongated spiral spring 15, having its large or baseportionresting on the diaphragm 14 aforesaid and having its upper end attachedto the valve-stem 12 aforesaid, the spring thusconstructed acting doublyto lift upward onthe valve, thus holding it in place, and also to holdthe valve-stemin a vertical position, so'

as to swing it shut on its hinge. The ring 16 is fitted around the topof the jet-tube in the latitude of theoperating-pin 12 and is designedby means of the loop 17, which loops over the lower end 9 of thethermostat, to prevent the thermostat from becoming sprung or strainedafter it has been properly adjusted.

The operation of the device is now readily explained. When the gas-jetis unlighted, the parts assume the position illustrated in Fig. 3 andalso shown in dotted lines in Fig. 8. In lighting the gas a match ortaper is applied, and the thumb or finger is also applied to the tip ofthe thermostat 9, pressing it inward, so as to open the valve. A flamebeing thus ignited, the heat of the same on the upward-extending loop 8causes the thermostat to remain in the position shown in full lines inFig. 8, thus keeping the .valve opened and a full supply of gas. It isnow evident that if from any accident the flame should be extinguishedthe thermostat becomes cooled and assumes the position shown in Fig. 3,thus closing the valve and suspending the flow of gas. Itis also evidentthat in lighting the taper may be first applied to the loop 8,

gages with a pin 10, sliding in an eyelet 11,

ICO

heating it, which will cause the gas to flow without necessity oftouching the thermostat with the hand.

The simplified shape of the thermostat, together with its direct actionon the valve of the gas-jet, constitute the principal features of ourinvention. Of course the details of their construction may be variedwithout departing from the general spirit of the invention.

\Vhat we claim, and desire to secure by Letters Patent, is

1. The herein-described automatic opening and closing device forgas-burners comprised in a thermostatconstruoted from a bimetallic stripattached to the upper end of a jettube and extending radially therefrom,the said strip recurved at a short distance from the vicinity of theflame and bent backward so as to extend longitudinally along saidjettube, in combination with a horizontal sliding pin, a valve in thelower part of said jettube arranged to be operated by the horizontalsliding pin and arranged to impinge on the lower end of the metallicstrip aforesaid for the purpose of transmitting action of the thermostatto the val ve,substantially as specifled.

2. In a gas-burner the combination with a jet-tube and valve of abimetallic strip having one end secured at the upper portion of saidjet-tube, and the other end bent over and extending downwardsubstantially parallel to the side thereof, and forming anupwardlyprojecting loop extending into the vicinity of the flame, thesaid downward-extending end engaging with a horizontal sliding pinextending through the walls of the jet-tube and arranged to tilt thevalve thereof, the valve arranged to be tilted by the horizontal slidingpin aforesaid, and means for holding the said valve normally closed,substantially as specified.

3. In a closing device for gas-jets the combination with the jet-tube ofa diaphragm having a central aperture or passage-way, a valve-lidcovering the same, and a stem to said lid extending through the apertureand fitted with an elongated spiral coil having its base resting on thediaphragm aforesaid opposite the said lid and designed to normally holdthe lid closed, a sliding pin extending out through the walls of saidjet-tube and having its inner end in contact with the stem, and athermostat arranged to actuate said sliding pin for tilting said lidwhen the gas is lighted, substantially as specified.

4. In a closing device for gas-jets, a jet-tube and valve, the saidjet-tube having an opening in its side, and a horizontal sliding pinextending therethrough, the inner end of said pin adapted to tilt avalve-lid, a stem to said valve-lid arranged in contact with saidsliding pin, the valve-lid arranged to be tilted by the said horizontalsliding pin, a thermostat adapted to actuate said sliding pin bypressure on it from without, and a guard-ring encircling the tube in thevicinity of said sliding pin, and adapted to guard the thermostat fromdisadjustment, substantially as specified.

5. The herein-described self-closing device for gas-burners comprised ina jet-tube, a bimetallic strip secured to the upper end of the saidjet-tube, and having a loop extending into the vicinity of the flame,and an arm extending downwardly along the said jet-tube and arranged toengage with a sliding pin extending through the walls thereof, a slidingpin extending through the walls of the jettube and adapted to engagewith the said downwardly-extendin g arm,a valve-stem connected with anopening and closing valve and arranged to engage with the inner end ofsaid sliding pin, a valve controlled by said valvestem and held normallyclosed by means of an elongated coiled spring,an elongated coiled springsecured at its small end to said valvestem, and its large end resting onthe diaphragm of the valve, a diaphragm having an aperture orpassage-way through which said valve-stem extends, the said aperturebeing arranged to be closed by the lid controlled by said stem, togetherwith a guard-ring extending around and including the downwardlyextendingarm of the thermostat, all arranged for joint operation as and for thepurpose described.

In testimony whereof we aflix our signa tures in presence of twowitnesses.

WOLF GLOU. ISIDOR GLOUi Witnesses:

D. G. MORAN, GEO. GELATT.

